Moving-picture machine



G. W. BINGHAM MOVING PICTURE MACHINE Oct- 13, 1925.

Filed Sept. 6, 1924 3 Sheets-Sheet 1 w Qwwemtoz Oct. 13, 1925. 1,556,903

.6. w. BINGHAM IOVING PICTURE MACHINE Filed Sept, 6, 1924 3 Sheets-Sheet 2 amoembo'z Oct. 13,1925. 7 1,556,903

G. W. BINGHAM uovme PICTURE mourns Filed Sept. 6, 1924 3 Sheets-Sheet 3 I awwemboz Gearge [#Bzizym WW m".

Patented Oct. 13, 1925.

UNITED STATES GEORGE w. BINGHAM, or NEW YORK, N. Y.

MOVING-PICTURE MACHINE.

Application filed September 6, 1924.

To all whom it may concern:

Be it known that I, GEORGE W. BINGHAM,

a citizen of the United States, and a resident of the city, county, and State of New York, have invented certain new and useful Improvements in Moving-Picture Machines, of which the following is a specification.

This invention relates to moving picture machines in general, but more particularly to projectors where the requirement for accurate registration and framing is an important factor.

Special objects of the invention are to provide eflicient mechanism of a simple and practical form for effecting accurate registration of the pictures and, when occasion requires, the quick framing of the pictures and return to normal, accurate registration.

Other objects of the invention and the novel features of construction by which the same are attained are disclosed in the following specification.

In the drawing accompanying and forming part of the specification, the invention is illustrated embodied in but one of its many possible commercial forms and it should therefore be understood that the 30 structure may be modified from this disclosure without departure from the broad spirit and scope of the invention as here inafter defined and claimed.

Figure 1 is a broken side elevation and part sectional view of a projector having features of the invention incorporated therein.

Figure 2 is a rear view of the same with portions of the framing mechanism shown in section.

Figure 3 is an enlarged horizontal sectional view on substantially the central plane of the feed roll.

Figure 4 is a further enlarged cross sectional View on substantially the plane of line 4- 1 of Figure 3.

The machine illustrated is of the beater type in which the film indicated at 5 is advanced by an oscillating beater 6 operating in conjunction with cooperating continuous ly rotating take-up rolls 7, 8. A similar pair of cooperating feed rolls 9, 10 are shown located above the gate 11 for maintaining a loop for the intermittent film advancing mechanism to operate upon.

Serial No. 736,205.

One of the feed rolls of each pair, desiglated transverse pins or keys 20, 21. These cylindrical segments are of conical formation inside to receive an expanding cone 22 as in the patent referred to, but in the present disclosure, the roll is considerably longer than the width of the film as clearly shown in Figure 3 so that the conical surfaces are of increased length, allowing for a much less acute angle and longer bearing surfaces.

This lessened angularity makes possible a much finer and more accurate adjustment of the roll and provides also an easier sliding action in the relative adjustment of the conical parts. The adjusting cone has an easy sliding fit over the supporting shaft 19 and is longitudinally slotted at 23, 24, for passage of the radial segment holding pins 20, 21. The cone is shown secured by transverse pin 25 on a shaft section 26 co-axial with the roll shaft 19 and forming in effect a longitudinally shiftable extension of the same.

A bearing is provided for the longitudinally shiftable cone carrying section of the shaft shown as a bearing sleeve 27 formed with an external screw thread 28 and engaged in a corresponding screw seat 29. The inner end of this sleeve forms an abutment engaging the outer end of the cone and therefore serves by its adjustment inward, to effect an expansion of the roll segments and by adjustment outward, to enable a contracting or collapsing movement of the roll segments.

The roll segments are held closely engaged over the cone and forced to follow the adjusting movements of the cone by an elastic encircling band 30 of rubber or the like shown seated in a peripheral groove 31 formed in the outer surface .of the segments. .This elastic ring is shown as of approximately the full picture width of the film strip so as to afford a frietional grip on the intermediate portion and substantially the full width of the strip and also to operate in effect as a wiper for keeping the picture portion of the film clean and free of dust or other foreign matter.

The adjusting sleeve is shown provided with a head 32 on the outer end of the same, forming a fingerhold by which the same may be readily adjusted and it will be seen that by turning this screw in one direction or the other, the cone will either be forced inward to wedge the roll segments apart or per mitted to shift outward to allow a collapsing movement of the se ments, thus increasing the peripheral spee of the roll in the one instance and reducing such speed in the other instance, whereby to effect an increase or reduction in the film movement. This construction provides for very fine and accurate adjustments and hence enables absolute registration. As the upper and the lower variable rolls are independently adjustable, the machine can be uickly adjusted to regulate either the lengt of feed or the size of the loop, orboth, as may be desired. 7

For framing purposes, provision is made for efi'ecting aquick change in the periph-f eral speed of the film advancing roll and the means for such pu ose comprises in the present disclosure, a s ift lever33pivoted on.the frame of the machine at 34'and1having a rotatable engagement with the end or the cone shaft 26 in the form of a yoke 351 engaging in a groove way BB-inthe'end pore tion of the shaft and swiveled on the leverat 37. This lever is normallyswungjout wardly into the position indicated in full.

lines in Fi re 3, by'a1'spring 38 where the cone is hel rotat'ably engaged with the end of the positioning-screw 27 saidscrew serving thus inefiect as an adjustable stop,' determining theoutward positionof the cone the feed'roll. i

It wi11 be seen from the forego and hence the normal running condition: of

j quickv enlargement of the roll andhence a sudden over-feeding of the film sufiicient and thus arproperframin of the picture;

It will be seen also that immediately'fthc, framing is effected, the lever will be automatieally returned and the roll restored to *the previously registered proper running 1 CODdltiOD, Thus'fthe. framing is efiected eally returnin 'eration.'

roll. v

7 ing that, the feed .roll may be readily ad usted for registration purposes at any time'by simply: turning the ad usting sleeve to; either in-- crease or reducethe peripheral speediof the roll and that forframing purposes,jthe lever-.-v can be thrust inward more-or less to effect a 1 without destro ing .or in an way impairing previous a justments'ma e for purposes of registration.

The combination of the framing and registering mechanisms in practically one and the same device very materially simplifies the construction and operation of the malatable to vary the film feed while the ma-,

chine is in operation, a registering device for effecting a fine adjustment of said means for registering purposes, an independently operable framing device for efiectm coars- .er ad ustments of said means for purposes and restoring means for automatn aming cally effecting return of the regulatable means to previously re 'stered condition after each actuation of t e framing device.

2. In. moving picture ap aratus, film advancing mechanism inclu ing afeed roll of peripherally variable speed, means for effecting gradual adjustments of the peripheral speed of said roll for registering purposes, means for independently efl'ecting sudden adjustments of said rollnfor framing purposes and restoring means for automatisaid roll to the previously registe'red eon ition after each framing op- 3. In moving 7 picture apparatus, film advancing mechanism inclu ing an expansible roll, means for effecting a fine adjustment "'inthe peripheral size of said expansible roll and means for independently effecting coarsierfad 'ustments in t eperipheral size of said 4. In moving picture a paratus, film advancing mechanisminclu ing'an' ex ansible roll, means for efiecting a fine ad ustment of said expansible roll, means for inde end- .ently effecting coarseradjustments 0 said roll and'spring means'ffo'r automatically restoring the roll to the condition previously effected by the fine. ad'usting means after teach operation of said. Ifmeans. j i

coarser adjusting 5;.In movin pieture ap aratus,a film advancing roll 0 peripheral y'variable s eed,

means for effecting relatively fine a ust- ;mentsin the peripheralspeed of said roll fand' independent means forefiecting coarser.- and quicker adjustments in the j speed ofzthe roll, said finer adjusting means to advance the film a picture length or more;

peripheral including a regulatable stop and a part en- ;rgaged thereby to limit the peripheral speed ;.;adjus'tment, and means for automaticall returning said part to said stop after eac acltuation of; the coarser adjusting means.

6.fIn moving icture apparatus, an expansible film feed ng roll, an expander therefor, an adjustable stop for ositioning said expander and means for s ifting the expander independently of said stop.

7. In moving picture apparatus, an expansible film feeding roll, an expander therefor, an adjustable stop for positioning said expander, means for shifting the expander independently of said stop and means for automatically returnin the expander to the position determine by said adjustable stop.

8. In moving picture a paratus, an expansible film feeding r 1, an expander therefor, an adjustable stop for positioning said expander and means for shifting the expander independently of said stop, including a swingin lever having pivotal connectionswith sai expander.

9. In moving picture apparatus, an expansible film feeding roll, an expander therefor having a shaft extension, an adjustable stop' for positioning said expander and a handle connected with the shaft extension for shifting the expander independently of the stop.

10. In movin picture apparatus, an expansible film feeding roll, an expander therefor having a shaft extension, an adjustable stop for positioning said expander,

a handle connected with the shaft extension for shifting the expander independently of the stop and spring means for automatically returning the handle and shaft extension.

11. In moving picture apparatus, an expansible film feeding roll, an expander for said roll havin a shaft extension, an ad justable screw s eeve surrounding said shaft extension and forming an abutment for the expander and shifting means for the expander engaged with said shaft extension for shiftin the-expander independently of the screw s eeve.

12. In movin picture ap aratus, a segmental expansi le film fee ing roll pro vided with resilient means for contracting the same, a cone for separating the segments, a shaft extending from said cone, a sleeve surrounding the shaft and adjustable to position the cone and shifting means engaged with the shaft for shifting the cone independently of said sleeve.

13. In moving picture apparatus, a roll shaft, expansibly related roll segments keyed on said shaft, a cone for expanding the segments slidably engaged over said shaft and provided with a concentric shaft extension, an adjusting screw for positioning said cone and a shifting device having a relatively rotatable engagement with the shaft extension for shifting the cone independently of the adjusting screw.

14. In moving picture apparatus, a roll shaft, expansibly related roll segments keyed on said shaft, a contracting ring surrounding said segments, a cone for expanding the segments slidably related to the shaft and provided with a shaft extension, a screw sleeve forming a bearing for said shaft extension and engaged by the cone and a swinging lever having a relatively rotatable connection with the end of the shaft extension.

15. In moving picture apparatus, a roll shaft, expansibly related roll segments keyed on said shaft, a contracting ring surrounding said segments, a cone for expanding the segments slidably related to the shaft and provided with a shaft. extension, a screw sleeve forming a bearing for said shaft extension and engaged by the cone, a swinging lever having a relatively rotatable connection with the end of the shaft extension and spring means for automatically returning, said lever and shaft extension to restore the engagement of the cone with the end of the screw sleeve.

16. In motion picture apparatus, an expansible film feeding roll of considerably greater length than the width of th film .which it feeds and comprising roll segments having inclined inner surfaces of the slight angle afforded by utilizing the full length of the over-size roll, an exp-anding'wedge of correspondingly slight incline engaged with the inclined inner surfaces of the roll segments, means for contracting the roll segments upon said wedge and means for shifting the wedge, including an adjustable abutment for positively forcing the wedge in'one direction and spring means for returning the wedge'into engagementwith said abutment.

17. In moving picture apparatus, a film feeding roll of hard non-resilient material having a resilient film contacting surface intermediate the ends-of the same, projecting when free above the non-resilient end portions of the roll, of substantially the full width of the picture section of the film but of less extent than the total width of the film so-as to engage only the intermediate picture section of the film and not contact with the edge ortions of the film, thereby leaving such e ge portions free for engagement by the hard non-yielding end parts of the roll.

18. In moving picture apparatus, film advancing means and independently operable screw and lever mechanisms respectively for effecting a fine gradual adjustment in the film feeding action of said advance means for registration purposes or coarser sudden variations in the film feeding action of the advancing means for framing purposes.

In witness whereof, I have hereunto set my hand this 25th day of July, 1924.

GEORGE W. BINGHAM. 

